CN210855992U

CN210855992U - Carbonization furnace

Info

Publication number: CN210855992U
Application number: CN201921719447.9U
Authority: CN
Inventors: 姚长利
Original assignee: Manzhouli Mantan Activated Carbon Co ltd
Current assignee: Manzhouli Mantan Activated Carbon Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-06-26
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a carbonization furnace relates to chemical machinery technical field. The furnace body sequentially comprises a storage bin, a drying area, a dry distillation area and a carbon bin from top to bottom, and further comprises a spraying system, wherein the spraying system comprises an air source, a water source, a mist generator and a spray head, the air source and the water source are arranged outside the furnace body, the mist generator enables air and water to be mixed to generate vaporized water mist, the spray head is arranged in the dry distillation area, the mist generator is communicated with the water source through a water conveying pipeline respectively, the mist generator is communicated with the air source through a gas conveying pipeline, and the spray head is communicated with the furnace wall penetrating through. The carbonization furnace can apply the vaporized water mist to the wood chips in the carbonization area, can effectively control the temperature within the range of 500-600 ℃, and simultaneously, the applied vaporized water mist can further play a role in isolating the wood chips from oxygen, thereby improving the carbonization rate.

Description

Carbonization furnace

Technical Field

The utility model relates to a chemical machinery technical field, more specifically say, relate to a retort.

Background

Charcoal is a dark brown or black porous solid fuel left by wood or wood raw materials after incomplete combustion or pyrolysis in the absence of air. In the actual production process, the waste material, namely wood chips, generated in the production process of wood enterprises can be used as the raw material for producing charcoal. The carbonization furnace is in a layered working state and sequentially comprises a bin 21, a drying area 22, a dry distillation area 23 and a carbonization bin 24 from top to bottom. The wood chips enter the furnace body from the bin 21 and are dried in the drying area 22, the heat required by the wood chips is provided by the high-temperature flue surrounding the carbonization furnace, and the wood chips pass through the section to finish the process from normal temperature to high temperature of 200 ℃. As the charcoal is discharged from the charcoal bin 24, the wood chips move downwards to enter the dry distillation area 23 to be pyrolyzed under the high-temperature oxygen-deficient state to generate the charcoal. The heat required by pyrolysis is provided by the combustion of the wood chips (combustible gas separated from the wood chips and part of the wood chips), if the combustion is too strong, the wood chips are converted into charcoal and then continue to be combusted into carbon dioxide, so that the charcoal yield is low, and if the combustion is too weak, the pyrolysis temperature of the wood chips cannot be reached, so that part of the wood chips cannot be converted into charcoal. The combustion condition of the wood chips is related to insufficient amount of the separated combustible gas and the oxygen content of the dry distillation zone 23, and the separation condition of the combustible gas is related to the temperature. Therefore, the temperature and oxygen content of the retort zone 23 can affect the char yield. The existing carbonization furnace simply controls the combustion working condition of the sawdust by controlling the ventilation quantity of the carbonization zone 23, can not effectively control the temperature and the oxygen content of the carbonization zone 23, and has low carbon yield.

Therefore, how to manufacture a carbonization furnace, which can control the temperature and oxygen content of the carbonization zone 23 to improve the carbonization rate, is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carbonization furnace, it can be with the temperature and the oxygen content control in reasonable scope in dry distillation district, improves the charcoal rate.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model provides a carbonization furnace, the induction cooker comprises a cooker bod, the furnace body still includes the water spray system from last to being feed bin, drying zone, dry distillation district and carboncoards down in proper order, the water spray system including set up at outside air supply of furnace body, water source, make air and water mixture generate the system fog ware of vaporization water smoke and set up the shower nozzle in the dry distillation district, system fog ware respectively through the conduit with the water source is linked together, through the gas transmission pipeline with the air source is linked together, passes through fog pipeline the oven of furnace body with the shower nozzle is linked together.

Optionally, the fog making device is including the negative pressure diversion room, air water mixing chamber and the diffusion tube that communicate in proper order, the negative pressure diversion room is provided with the opening along its extending direction's both ends, its lateral wall is provided with the water inlet, the negative pressure diversion room passes through the water inlet with water pipeline is linked together, the diffusion tube is kept away from the one end of air water mixing chamber with fog pipeline is linked together, still includes that both ends are provided with open-ended gas nozzle, gas nozzle one end stretches into in the negative pressure diversion room, the other end with gas pipeline is linked together, the negative pressure diversion room with the gas nozzle is close to the one end of air water mixing chamber is all along being close to the direction cross sectional area of air water mixing chamber reduces gradually, air water mixing chamber and diffusion tube are all along keeping away from the direction cross sectional area of negative pressure diversion room grow gradually.

Optionally, the negative pressure water diversion chamber, the gas nozzle, the gas-water mixing chamber and the diffusion pipe are all arranged in a revolving body structure, and the revolving centers of the revolving bodies are located on the same straight line.

Optionally, the negative pressure diversion chamber, the gas-water mixing chamber and the diffusion pipe are arranged into an integrated structure.

Optionally, a water quantity regulating valve and a flow meter are arranged on the water conveying pipeline.

Optionally, a gas transmission amount regulating valve is arranged on the gas transmission pipeline.

Optionally, the water source is provided as a water tank.

Optionally, the air source is provided as an air pump.

Optionally, the air-water mixing chamber is set to be a conical structure, and the small end of the air-water mixing chamber is located at one side close to the negative pressure diversion chamber, and the large end of the air-water mixing chamber is located at one side of the diffusion pipe.

Optionally, the diffuser pipe is arranged in a conical structure, and the small end of the diffuser pipe is located on one side of the gas-water mixing chamber.

The utility model provides a technical scheme can include following beneficial effect:

the utility model discloses increase water-spraying system on the basis of original carbide furnace, it can be in the dry distillation district and applyed the vaporization water smoke to the saw-dust, can be effectively with temperature control in 500 ℃ -600 ℃ within range, the vaporization water smoke of applying simultaneously can further play the effect of keeping apart saw-dust and oxygen, improves the charcoal rate of producing (the ratio of charcoal and added saw-dust promptly).

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a structure of a conventional carbonization furnace;

FIG. 2 is a schematic diagram of a spray system according to some embodiments;

FIG. 3 is a schematic diagram of a mist generator according to some embodiments;

fig. 4 is a schematic of the pressures at various stages in the mist generation system.

In the figure: 1-a ball float valve, 2-a water source, 3-a water quantity regulating valve, 4-a flowmeter, 5-a water pipeline, 6-a fog making device, 7-an air source, 8-a gas pipeline, 9-a gas quantity regulating valve, 10-a fog conveying pipeline, 11-a spray head, 21-a stock bin, 22-a drying area, 23-a dry distillation area, 24-a charcoal bin, 61-a negative pressure water diversion chamber, 62-a gas spray pipe, 63-a gas-water mixing chamber, 64-a diffusion pipe and 611-a water inlet.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the present invention.

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-4, the utility model provides a carbonization furnace, the carbonization furnace has increased the spraying system on original carbonization furnace's basis, including the furnace body, as shown in fig. 1, the furnace body is from last to being feed bin 21, dry zone 22, dry distillation district 23 and charcoal storehouse 24 down in proper order. The dry distillation furnace further comprises a spraying system, as shown in figure 2, the spraying system comprises an air source 7 arranged outside the furnace body, a water source 2, a mist generator 6 for mixing air and water to generate vaporized water mist and a spray head 11 arranged in the dry distillation area 23, the mist generator 6 is respectively communicated with the water source 2 through a water conveying pipeline 5, is communicated with the air source 7 through an air conveying pipeline 8, and is communicated with the spray head 11 through a mist conveying pipeline 10 penetrating through the furnace wall of the furnace body. Wherein, a water tank can be adopted as a water source 2, and a ball float valve 1 is arranged in the water tank and used for controlling the water level of the water tank 2. An air compressor is used as the air source 7. The water in the water tank and air at a certain pressure from the air compressor are mixed in the mist generator 6 to form a vaporized water mist, which is transported to the spray head 11 through the mist transporting pipe 10 and then sprayed onto the wood chips.

The wood chips can be waste materials generated in the production process of wood enterprises, and the carbonization furnace is in a layered working state as shown in fig. 1 and sequentially comprises a storage bin 21, a drying area 22, a carbonization area 23 and a carbonization bin 24 from top to bottom. The wood chips enter the furnace body from the bin 21 and are dried in the drying area 22, the heat required by the wood chips is provided by the high-temperature flue surrounding the carbonization furnace, and the wood chips pass through the section to finish the process from normal temperature to high temperature of 200 ℃. As the charcoal is discharged from the charcoal bin 24, the wood chips move downwards to enter the dry distillation area 23 to be pyrolyzed under the high-temperature oxygen-deficient state to generate the charcoal. The free combustion of wood dust can make the temperature of the dry distillation zone 23 reach about 1400 ℃, and the temperature can be controlled within the required range only by taking temperature reduction measures at appropriate time. The wood chips are sprayed with vaporized water mist in the dry distillation area 23, and the main mechanisms of the action of the vaporized water mist are vaporization oxygen isolation and cooling. After the vaporized water mist is sprayed to the wood chips, the vaporized water mist is attached to the surfaces of the wood chips to form fine water drops, the water drops are heated and quickly evaporated, and a large amount of heat is absorbed in the evaporation process, so that the temperature is reduced. Meanwhile, the fine water drops are evaporated into water vapor, the volume of the water vapor expands, the water vapor is filled in gaps among the wood chips, the air in the water vapor is driven away, the effect of isolating oxygen is achieved, the combustion of the wood chips is inhibited, an anoxic environment is provided, and the wood chips are pyrolyzed to generate charcoal. Therefore, the charcoal produced by adopting the carbonization furnace can effectively control the temperature and the oxygen content of the carbonization zone 23, and the charcoal production efficiency is high.

Present retort and the utility model discloses well retort's charcoal productivity ratio as follows:

	charcoal production rate
		Existing carbonization furnaces	20％
The utility model discloses a carbonization furnace	30％

As shown in fig. 3, the mist generator 6 includes a negative pressure water guiding chamber 61, a gas-water mixing chamber 63, and a diffusion pipe 64, which are sequentially communicated, the negative pressure water guiding chamber 61 is provided with openings along both ends of the extension direction thereof, a water inlet 611 is provided on the sidewall thereof, the negative pressure water guiding chamber 61 is communicated with the water pipe 5 through the water inlet 611, one end of the diffusion pipe 64 far away from the gas-water mixing chamber 63 is communicated with the mist conveying pipe 10, the mist generator further includes a gas spraying pipe 62 with openings at both ends thereof, one end of the gas spraying pipe 62 extends into the negative pressure water guiding chamber 61, the other end is communicated with the gas conveying pipe 8, the cross sectional areas of the negative pressure water guiding chamber 61 and one end of the gas spraying pipe 62 near the gas-water mixing chamber 63 are gradually reduced along the direction close to the gas-water mixing chamber 63, and the cross sectional areas of the gas.

The working principle of the mist generator 6 is shown in fig. 3 and 4, and the working medium (air supplied by the air compressor) with pressure Po is injected through the gas injection pipe 62 at a high speed Wp. Due to the entrainment of this jet, a low pressure region is created at the inlet of the gas-water mixing chamber 63, which is lower than the injection medium flow pressure Pn. The pressure in the low pressure zone is P2. Therefore, the ejector medium flow (water supplied from the water tank 2) is constantly sucked into the air-water mixing chamber 63 at a flow rate of W2, and the medium flow and the ejected medium flow are combined with each other in the air-water mixing chamber 63, so that the high-speed medium flow and the ejector medium flow are gradually equalized to form a mixed flow (vaporized mist), and the mixed flow enters the diffuser pipe 64 at a flow rate of W3. The flow rate of the mixed flow is gradually reduced to Wg and the pressure is increased to Pg in the diffusion pipe 64, and then the mixed flow is conveyed to the spray head 11 through the mist conveying pipe 10 to be sprayed to the wood chips.

Wherein the negative pressure water diversion chamber 61, the gas nozzle 62, the gas-water mixing chamber 63 and the diffusion pipe 64 are all arranged in a revolving body structure, and the revolving centers of the revolving bodies are positioned on the same straight line. The structure of the revolving body is simple to manufacture, has small resistance and is suitable for forming and conveying vaporized water mist.

Further, the negative pressure water introducing chamber 61, the air-water mixing chamber 63 and the diffuser pipe 64 are provided as an integrated structure. The integral forming can not only meet the requirement of making the vaporized water mist, but also further simplify the making process.

The water delivery pipeline 5 is provided with a water quantity regulating valve 3 and a flowmeter 4, and the gas delivery pipeline 8 is provided with a gas delivery regulating valve 9. This allows a more precise control of the ratio of the amount of water and air entering the mist generator 6 to produce the desired vaporized mist.

In the mist generator 6, the air-water mixing chamber 63 is set to a conical structure, and the small end thereof is located at one side close to the negative pressure water introducing chamber 61, and the large end thereof is located at one side of the diffusion pipe 64. The diffuser pipe 64 is provided in a tapered shape, and the small end thereof is located at one side of the air-water mixing chamber 63. The structure is simple to manufacture and low in cost.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a carbonization furnace, includes the furnace body, the furnace body is from last to being feed bin (21), drying zone (22), dry distillation district (23) and charcoal storehouse (24) down in proper order, its characterized in that still includes spraying system, spraying system is including setting up outside air supply (7), water source (2), the system fog ware (6) that make air and water mix formation vaporization water smoke and setting shower nozzle (11) in dry distillation district (23), system fog ware (6) respectively through conduit (5) with water source (2) are linked together, through gas transmission pipeline (8) with air supply (7) are linked together, pass through fog pipeline (10) the oven of furnace body with shower nozzle (11) are linked together.

2. The carbonization furnace as claimed in claim 1, wherein the mist generator (6) comprises a negative pressure water diversion chamber (61), a gas-water mixing chamber (63) and a diffusion pipe (64) which are sequentially communicated, the negative pressure water diversion chamber (61) is provided with openings at both ends along the extending direction thereof, a water inlet (611) is arranged on the side wall thereof, the negative pressure water diversion chamber (61) is communicated with the water conveying pipeline (5) through the water inlet (611), one end of the diffusion pipe (64) far away from the gas-water mixing chamber (63) is communicated with the mist conveying pipeline (10), the carbonization furnace further comprises a gas nozzle (62) with openings at both ends thereof, one end of the gas nozzle (62) extends into the negative pressure water diversion chamber (61), the other end of the gas nozzle (64) is communicated with the gas conveying pipeline (8), the negative pressure water diversion chamber (61) and one end of the gas nozzle (62) close to the gas-water mixing chamber (63) are all communicated along the transverse sectional area close to the gas-water mixing chamber ( The cross sectional area of the gas-water mixing chamber (63) and the cross sectional area of the diffusion pipe (64) are gradually increased along the direction far away from the negative pressure water guide chamber (61).

3. Carbonization furnace according to claim 2, characterized in that the negative pressure diversion chamber (61), the gas lance (62), the gas-water mixing chamber (63) and the diffuser pipe (64) are all arranged as a structure of revolution with their centers of revolution on the same straight line.

4. Carbonization furnace according to claim 3, characterized in that the negative pressure diversion chamber (61), the gas-water mixing chamber (63) and the diffuser pipe (64) are arranged as an integrated structure.

5. Charring furnace as in claim 4, characterized in that the water duct (5) is provided with a water quantity regulating valve (3) and a flow meter (4).

6. Retort according to claim 4, characterized in that the gas line (8) is provided with a gas flow regulating valve (9).

7. Carbonization furnace as claimed in claim 2, characterized in that the water source (2) is provided as a water tank.

8. Carbonization furnace as claimed in claim 2, characterized in that the gas source (7) is provided as a gas pump.

9. Carbonization furnace as defined in claim 2, characterized in that the gas-water mixing chamber (63) is provided with a conical structure with its small end located at the side close to the negative pressure water diversion chamber (61) and its large end located at the side of the diffuser pipe (64).

10. Retort according to claim 2, characterized in that the diffuser tube (64) is provided with a conical structure with its small end located on one side of the gas-water mixing chamber (63).